I asked this question before...no answers received...should songs on the same album contain different kinds of genres?

There is no necessity for either case. You could swap genres wildly, you could stay within the same genre.

A student or professor may very well determine that songs you think are within the same genre are technically different genres, or that one song is part of some hybrid genre.

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What is important is to have a level of consistency between tracks. For example, Daft Punk's album "Discovery" has three distinct songs: "Aerodynamic", "Something About Us", and "Veridis Quo".

"Aerodynamic" has a pumping bassline and arpeggio-rooted melody that, while within the 'post-disco'/"House" genre EDM would be perfectly suited to a post-Grunge cover that removes the electronic vibes by invoking "actual" instruments.

"Something About Us" has a smoother feel, fitting more as a pure Disco song, or at least a strong homage to the golden-age of Disco music. You don't even need to rearrange the song to be done on physical instruments, since it's minimally 'electronic'.

"Veridis Quo"...Even without its chiptune vibe (a result of the sawtooth voice used by the keyboard), this song would fit right at home as background music or a boss theme in Final Fantasy or Phantasy Star.

You have video-game music and literal Disco together on the same album, and at points there's some definite Rock music showing up. Yet this hodgepodge all fits together, through its melodic beats and tonal shifts. Daft Punk took this album, shifted only a couple tracks around, and got a famous Japanese artist to make a full-length music video for the entire damn album.

You hear the songs on their own, you wouldn't suspect they were released on the same album. But the songs work so well together that they don't even need to be interrupted (let alone by frickin' dialogue) in order to tell an engaging action-packed story.

That's totally up to the artist. You don't have to say "kinds of genres", just say different genres".

Put whatever you like on your album. Maybe it will sell maybe it won't. Then you'll have your answer about "should".

Yes, the edges overlap anyway.

I've ANSWERED this question before.

No. It would be a mess. The chances you understand even half those genres well enough to do anything but a pastiche is basically zero.

Obviously you can make an album sound however you want, but putting it under multiple genres is a little misleading. Every album, even if it has multiple sounds, has a main overall sound and it should be labeled as such. No one really makes every song a different genre. I think there’s a category for something like that anyway.

They could, not sure I've heard of that before. Maybe mix albums or compilation albums are like that but artists generally have a certain sound/style which they are good at and put things together around that.